[pox-dev] Error while setting up PoX controller with GENI-based fat-tree topology
Murphy McCauley
murphy.mccauley at gmail.com
Sat Aug 15 14:51:13 PDT 2015
Pleases see the "I'm seeing many packet_in messages and forwarding isn't working; what gives?" and "Does POX support topologies with loops?" questions in the FAQ.
-- Murphy
On Aug 15, 2015, at 2:11 AM, Sadia Bashir <11msccssbashir at seecs.edu.pk> wrote:
> Hello,
>
> I have set up fat-tree topology using InstaGENI aggregate, pls see file attached for more detail.
>
> I am setting up edge, aggregate and core switches using following set of commands:
>
> ovs-vsctl add-br br0
> ifconfig eth1 0
> ifconfig eth2 0
> ifconfig eth3 0
> ifconfig eth4 0
> ovs-vsctl list-br
> ovs-vsctl add-port br0 eth1
> ovs-vsctl add-port br0 eth2
> ovs-vsctl add-port br0 eth3
> ovs-vsctl add-port br0 eth4
> ovs-vsctl list-ports br0
> ifconfig eth1 0 up
> ifconfig eth2 0 up
> ifconfig eth3 0 up
> ifconfig eth4 0 up
> ovs-vsctl set-controller br0 tcp:<controller IP>:6633
> ovs-vsctl set bridge br0 protocols=OpenFlow10
> ovs-vsctl set-fail-mode br0 secure
>
> I have set up a POX(dart) controller with public IP and running forwarding.l2_learning on it:
> ./pox.py log.level --DEBUG pox.forwarding.l2_learning
>
> all edge, aggregate and core nodes are running ovs 2.3.1 version.
>
> But firstly, I am not able to ping/iperf between two hosts and secondly, the controller runs with this error:
>
> ERROR:openflow.of_01:[62-75-7f-15-b9-4d 14] OpenFlow Error:
> [62-75-7f-15-b9-4d 14] Error: header:
> [62-75-7f-15-b9-4d 14] Error: version: 1
> [62-75-7f-15-b9-4d 14] Error: type: 1 (OFPT_ERROR)
> [62-75-7f-15-b9-4d 14] Error: length: 36
> [62-75-7f-15-b9-4d 14] Error: xid: 118250
> [62-75-7f-15-b9-4d 14] Error: type: OFPET_BAD_REQUEST (1)
> [62-75-7f-15-b9-4d 14] Error: code: OFPBRC_BUFFER_UNKNOWN (8)
> [62-75-7f-15-b9-4d 14] Error: datalen: 24
> [62-75-7f-15-b9-4d 14] Error: 0000: 01 0d 00 18 00 01 cd ea 00 00 05 d4 00 02 00 08 |................|
>
> Any help/suggestion to fix this issue is much appreciated. OR if anyone in the list has experience with setting up GENI topologies can point a problem in the steps I am following. PS the same steps work fine with simple GENI-topology(3 hosts, 1 switch, 1 controller).
>
>
> Thank you,
> Sadia Bashir
>
> --
>
>
> <GENI Final Fat-tree Topology.png>
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